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Custom Air Filters Built to Your Specifications

High-efficiency custom filters designed & manufactured to fit your air filtration system. Build your custom air filter by providing depth, length, and width measurements, and required MERV ratings or application practices.

Particulate Filters


Particulate filters are recommended in applications where extremely hazardous particles, fumes and chemicals can pose a threat to the user and/or environment.

Specialty Blended Carbon Filters

Acid Gas | Ammonia | Mercury | Aldehyde

Our custom specialty blended filters are highly efficient at removing fumes, odors, and severely toxic chemicals.

Our Manufacturing Process

Our application specialists will work with you to understand your unique air filtration and delivery needs and will optimize your manufacturing process providing you with the optimal experience in ordering your next custom filter.

  1. Customer Service
  2. Design
  3. Approval
  4. Manufacturing
  5. Quality Control
  6. Packaging
  7. Delivery

Why Choose Sentry Custom Filters

High quality, exceptional service, and well-made American products! We work directly with you to help design and deliver the optimal filter for your needs. Our values of satisfaction, respect, integrity, flexibility, expertise, and reliability are evident in every step of our process.

Customer Service

Our experienced, easy-to-reach, US-based customer service team works directly with you to meet your needs. Our application specialists are available M-F (8 am-4:30 pm Central Time)

Engineering Design

Our full-service engineering and design team listens to your needs and designs a filter that fits your specific filtration requirement. We include 3D renderings and approval drawings to ensure you have the proper filter design and build experience.


Using our in-house, high-quality machinery, we build the filter to the engineering design specifications.

On-Time Delivery

With quick turnaround times, our in-house manufactured filters will ship from our Houston-based facility within weeks to assure on-time delivery.